Tactical firearm systems &amp; methods of manufacturing same

ABSTRACT

Tactical firearm systems and methods of manufacturing tactical firearm systems are discussed herein. In some embodiments, a tactical weapons platform can comprise a forend assembly adapted to house a portion of a barrel; a receiver assembly detachably coupled to the forend assembly and adapted to interface with a bolt action; and a butt stock assembly detachably coupled to the receiver assembly. In other embodiments, a modular stock assembly for a bolt action rifle can generally comprise a forend assembly, a receiver assembly, and a butt stock assembly. The forend assembly can have a body adapted to house a barrel in a free floating configuration, wherein the body surrounds at least a portion of the length of the barrel. The receiver assembly can be detachably coupled to the forend assembly and adapted to directly interface with a bolt action without bedding. The butt stock assembly can be detachably coupled the receiver assembly by a hinge. Other aspects, features, and embodiments are also claimed and described herein.

CROSS-REFERENCE TO RELATED APPLICATION & PRIORITY CLAIM

This application claims priority to and the benefit of: (1) U.S.Provisional Patent Application No. 60/979,301, filed 11 Oct. 2007; and(2) U.S. Provisional Patent Application No. 61/100,788, filed 29 Sep.2008. Both of said provisional patent applications are incorporatedherein by reference in their entireties as if fully set forth below.

TECHNICAL FIELD

The various embodiments of present invention relate generally tofirearms and more particularly to user-configurable weapons platformsthat are modular, bedding-less adaptive, and retractable foldable stock.In addition, various embodiments of the present invention relate tovarious features capable of being used in concert with various firearmsweapons platforms and methods for the provision of tactical weaponsplatforms.

BACKGROUND

Since the beginning of the modern age of firearms (e.g., rifles), theconstruction of firearms have been essential to providing long rangeaccuracy. This is most evident looking at the historical evolution ofthe handgun to the rifle that allowed shooters to extend their range ofengagement for personal defense, hunting, target competition, andwarfare.

Today's tactical or multi-purpose rifles must adapt to a variety ofshooters in adverse environments, conditions, terrains, operationalscenarios, and competitive marksmanship events. For example, riflestocks must be configurable to meet the physical body types of shooters,supplemental equipment (e.g., one or more accessories), demands of thetype of shooting performed, and preferences of individual shooters.Fundamental elements of all weapons platforms include, for example,actions, chasses, and stocks.

The vast majority of designs, especially those for bolt action rifleweapon platforms, have not changed much over the last 50 years.Essentially most rifle stocks are derived in one form or another fromtarget shooting stocks. Some are made lighter and thinner for huntingand others made thicker and heavier for competition. Traditionally madeof wood, rifle stocks are the furniture that barreled action receiversare mounted into. Today, wood rifle stocks are being improved withaluminum pillars, epoxy bedding compounds, or simply being totallymanufactured of fiberglass, or other composites, all in an effort tosustain or increase accuracy and durability.

While serving their respective purposes, traditional rifle stocks dopossess drawbacks. Wood is obviously very beautiful, plentiful, andrelatively inexpensive (in utility grades); however it is quitesusceptible to damage. Indeed, it will readily absorb water, and isadversely affected by extremes in temperature. Bedding compounds havebeen brought about as a way to provide a stable “bed” or interface ofsynthetic material that is less affected by temperature extremes andhelp to improve accuracy. Bedding, however, must be installed by aqualified gunsmith, maintained and repaired over time, and is affectedby cleaning solvents, chemicals, moisture, rough handling andtemperature extremes. Fiberglass or composite stocks are much betterrifle stocks for protection against the elements, heat & cold and takebedding compounds well. These types of stocks are expensive, are singlepurpose, not ergonomically friendly, custom manufactured primarily as anaftermarket item, and suffer from perhaps the largest and mostsignificant drawback—the basic design is still essentially that of atarget shooting stock. Rifle shooting disciplines are so many and variedthat the traditional rifle stock needs to evolve with the modernapplications of the rifle for long range tactical shooting.

Even newer stock innovations in the rifle industry maintain a steadfasthold on the target shooting design legacy. While innovations inmaterials and improvements in ergonomics indicate that some progress isbeing made, it is evident that the rifle stock is not being consideredas part of an integrated rifle system platform.

What is needed, therefore, are modular user configurable tactical riflesthat can be adapted to meet a variety of environmental, operational, anduser preference requirements. In addition, what is needed are varioustypes of user-friendly accessories that can aid in providing a weaponsplatform capable of being configured in many manners. It is to theprovision of such tactical rifles, user-friendly accessories, andassociated manufacturing methods that the various embodiments of thepresent invention are directed.

BRIEF SUMMARY OF EXEMPLARY EMBODIMENTS

Briefly described, some embodiments of the present invention can bedirected to a rifle stock assembly. A rifle stock assembly can generallyinclude a forend assembly, a receiver assembly, and butt stock assembly.The forend assembly can be adapted to house a portion of a barrel. Areceiver assembly can be configured to be detachably coupled to theforend assembly. The receiver assembly can be adapted to interface witha bolt action. The butt stock assembly can be configured to bedetachably coupled to the receiver assembly.

A rifle stock assembly can also include other features. For example, aforend assembly and a receiver assembly can be configured to bedetachably coupled by a first fastener. Also, a forend assembly can beconfigured to form a sleeve surrounding at least a portion of a barrel.The forend assembly can also be configured such that forend assemblydoes in physical contact with the barrel. The receiver assembly cancomprise a cavity, the forend assembly can comprise a projection, andthe projection can be configured to be inserted into the cavity tocouple the forend assembly to the receiver assembly. Also, theprojection can be secured within the cavity by a fastener. The receiverassembly can be adapted to interface with a bolt action without abedding material. And the receiver assembly can comprise a bay contouredto directly interface with a bolt action.

As another feature example of some embodiments, a rifle stock assemblycan include a connecting element. The connecting element can couple aforend assembly to a receiver assembly and serve as an interface memberbetween the forend assembly and receiver assembly. The interface enablesthe the forend assembly to not be in physical contact with the receiverassembly. In addition, the receiver assembly can comprise a cavity, theconnecting element can comprise a projection and a rim, and theprojection adapted to be inserted into the cavity and the rim adapted tobe inserted into interior portion of the forend assembly.

Still yet other features can be incorporated with a rifle stock assemblyaccording to the various embodiments of the present invention. Forexample, a rifle stock assembly can include a hinge. The receiverassembly and the butt stock assembly can be detachably coupled by ahinge. In addition, the butt stock assembly having a longitudinal axis,the longitudinal axis aligned below the hinge. As another example, arifle stock assembly can include one or more rails (or rail attachmentsurfaces). A first rail can be adapted to couple to a top portion of aforend assembly and a top portion of an action and the action can becoupled to the receiver assembly. The rail can extend substantially thelength of the forend assembly and action. Also, a second rail can becoupled to a side portion of the forend assembly and a third rail can becoupled to a bottom portion of the forend assembly. The forend assemblycan comprise a first mounting area for coupling the second rail to theforend assembly parallel to the barrel and a second mounting area forcoupling the second rail to the forend assembly parallel to the barrel.

In accordance with another embodiment, a modular stock assembly for abolt action rifle can generally comprise a forend, a receiver, and abutt stock. The forend assembly can have a body adapted to house abarrel in a free floating configuration. The body can be configured tosurround at least a portion of the length of the barrel. The receiverassembly can be detachably coupled to the forend assembly and adapted todirectly interface with a bolt action without a bedding. The butt stockassembly can be detachably coupled to the receiver assembly by a hinge.A bolt action rifle can also comprise a first rail coupled to a topportion of the forend assembly and to a top portion of an action. Theaction can be coupled to the receiver assembly, and the rail can extendsubstantially the length of the forend assembly and action.

In accordance with yet another embodiment, a modular stock assembly fora bolt action rifle can generally comprise one or more forends,receivers, and butt stocks. For example, a modular rifle stock assemblysystem can comprise: a first forend assembly adapted to house a portionof a barrel; a second forend assembly adapted to house a portion of abarrel; a first receiver assembly adapted to detachably couple to thefirst forend assembly and the second forend assembly, the first receiverassembly adapted to interface with a first bolt action; a secondreceiver assembly adapted to detachably couple to the first forendassembly and the second forend assembly, the second receiver assemblyadapted to interface with a second bolt action; a butt stock assemblyadapted to detachably couple to the first receiver assembly and thesecond receiver assembly. A modular stock assembly can also include asecond butt stock assembly adapted to detachably couple to the firstreceiver assembly and the second receiver assembly.

Other aspects and features of embodiments of the present invention willbecome apparent to those of ordinary skill in the art, upon reviewingthe following description of specific, exemplary embodiments of thepresent invention in conjunction with the accompanying figures. Whilefeatures of the present invention may be discussed relative to certainembodiments and figures, all embodiments of the present invention caninclude one or more of the advantageous features discussed herein.Indeed, while one or more embodiments may be discussed as having certainadvantageous features, one or more of such features may also be used inaccordance with the various embodiments of the invention discussedherein. Also, while discussion contained herein may, at times, focus onrifle-type weapons platforms, embodiments of the present invention canalso be used with various other weapons platforms. In similar fashion,while exemplary embodiments may be discussed herein as device, system,or method embodiments, it should be understood that such exemplaryembodiments can be implemented in various devices, systems, and methodseven thought not discussed in such embodiments.

BRIEF DESCRIPTION OF FIGURES

FIG. 1A illustrates a perspective view of a tactical firearm system inaccordance with some embodiments of the present invention.

FIG. 1B illustrates an exploded view of the tactical firearm system inaccordance with some embodiments of the present invention.

FIG. 1C illustrates a side view of an exemplary embodiment of a frontassembly interface.

FIG. 1D illustrates a bottom view of an exemplary embodiment of a frontassembly interface.

FIG. 2A illustrates a perspective view of an improved long-range boltaction weapons platform in accordance with some embodiments of thepresent invention.

FIG. 2B illustrates a perspective view of a truss-type configured forendused in accordance with some embodiments of the present invention.

FIG. 2C illustrates an exploded view of a truss-type configured forendused in accordance with some embodiments of the present invention.

FIG. 2D illustrates an exploded view of an enclosed forend showingvarious forend features in accordance with some embodiments of thepresent invention.

FIG. 2E illustrates various modular sub-components of a forend inaccordance with some embodiments of the present invention.

FIG. 2F illustrates a close-up, perspective view of an enclosed forendused in accordance with some embodiments of the present invention.

FIG. 2G illustrates a cross-sectional view of an enclosed forend used inaccordance with some embodiments of the present invention.

FIG. 2H illustrates a close-up, underside view of an enclosed forendused in accordance with some embodiments of the present invention.

FIG. 2I illustrates another cross-sectional view of an enclosed forendused in accordance with some embodiments of the present invention.

FIG. 3A illustrates a perspective view of a receiver used in accordancewith some embodiments of the present invention.

FIG. 3B illustrates an upper frontal perspective view of a receiverassembly in accordance with some embodiments of the present invention.

FIG. 4A illustrates another perspective view of the magazine used inaccordance with some embodiments of the present invention.

FIG. 4B illustrates yet another perspective view of the magazine used inaccordance with some embodiments of the present invention.

FIG. 4C illustrates an exploded view of the magazine used in accordancewith some embodiments of the present invention.

FIG. 5A illustrates an exploded view of a modular, adjustable pistolgrip used in accordance with some embodiments of the present invention.

FIG. 5B illustrates another perspective view of the receiver used inaccordance with some embodiments of the present invention.

FIG. 6 illustrates an exploded view of a modular, adjustable buttstockused in accordance with some embodiments of the present invention.

FIG. 7A illustrates an exploded view of a modular, locking hinge used inaccordance with some embodiments of the present invention.

FIG. 7B illustrates a perspective view of the modular, locking hingeused in accordance with some embodiments of the present invention.

FIG. 8 illustrates a method to fabricate a tactical weapons platform inaccordance with some embodiments of the present invention.

DETAILED DESCRIPTION OF PREFERRED & ALTERNATIVE EMBODIMENTS

To facilitate an understanding of the principles and features of thevarious embodiments of the present invention, various illustrativeembodiments are explained below. Indeed, embodiments of the presentinvention are described below for providing tactical weapons platformscapable of being configured for various user requirements. Embodimentsof the invention, however, are not so limited. Rather, embodiments ofthe present invention can incorporate one or more accessories forimplementation in a tactical weapons platform. For example and notlimitation, embodiments of the present invention may be provided as oneor more of: a modular stock chassis system, an improved long-range boltaction rifle platform, a thermal heat mirage management system for usewith a weapons platform, a weapons platform comprising modular forends,a weapons platform comprising a composite forend construction, a weaponsplatform comprising a versatile buttstock body, a weapons platformcomprising a multi-threaded monopod, a length of pull mechanism to aidin providing a user-configurable weapons platform, a weapons platformcomprising a modular, adjustable grip handle, and a weapons platformcomprising a truss-type configured forend.

Various embodiments of the present invention are directed to modularadaptive tactical stocks (e.g., rifle stocks). Such stocks can includeergonomic enhancements and modular interchangeable components that canbe configured to particular environmental, operational and accessoryrequirements. Tactical rifle stocks according to some embodiments of thepresent invention can comprise a butt stock assembly; lower receiverassembly; an adjustable pistol grip assembly; and multiple free-floatingbarrel forend assemblies. These subassembly components of a tacticalrifle stock are preferably modular, adjustable, and easilyinterchangeable. Inter-changeable subassemblies enable tactical riflestocks to accommodate either left or right handed operation, custom, orcommercial rifle receivers, or a variety of configurations and a broadrange of accessories.

Embodiments of the present invention were conceived and developed as amodular stock chassis system and as the basis for an integrated rifleplatform to support the broadest range of rifle shooting applications.Embodiments of the present invention provide users with an adaptive,lightweight, entirely modular, ergonomically adjustable, userconfigurable, folding, and retractable rifle stock chassis system forshoulder fired weapons and rifles. Embodiments of the present inventioncan be configured for left or right handed operation by simply changinga modular lower receiver and a locking hinge joint.

Exemplary embodiments of the present invention include an adjustablefolding-retractable stock. The adjustable folding-retractable stockprovides users with a high level of operational flexibility,compactness, maneuverability, and transportability. Embodiments of thepresent invention can be carried, manipulated, and used with the buttstock in the folded and sling carry positions. The adjustablefolding-retractable stock provides users with a tool-less ability torapidly change the length of pull (LOP), even with gloved hands using acam lock throw lever to accommodate users wearing thinner or thickerclothing, vests or body armor. Users can easily open and close thefolding-retractable stock assembly with gloved hands utilizing a singlebutton control.

Exemplary embodiments of the present invention include a modular buttstock configuration. Rifle shooters are generally physically different,and the invention allows users to adjust the butt pad (recoil pad) upand down to better fit into his shoulder pocket. With changingenvironments, events, or missions shooters can opt for either abutt-hook stock configuration or a butt stock mounted, retractablemonopod that provides variable height adjustment of the butt-stock infield situations. The monopod can also be used for a non-shooting handmulti-positional grip to aid in sustaining accuracy in unconventionalshooting positions.

Exemplary embodiments of the present invention include an adjustablehand grip. The adjustable hand grip provides the shooter with multiplegrip angle mounts for shooter comfort, enhanced handing under differentshooting positions improving accuracy. The hand grip is adjustablebetween the web of the shooting hand and pad of the trigger finger withone screw.

Exemplary embodiments of the present invention employ an innovative railattachment system (e.g., a Picatinny rail attachment system). The 1913spec Picatinny Rails can be designed with a convex bearing surfacemating to a complementary concaved mounting surface such that, whentightened down, the rails lock more rigidly and securely to theattachment points contributing to overall system rigidity. Intelligentuse of Picatinny Rails supports a complete optics and electro-opticssuite of equipment to include: optical day sight, night sight, laserrange finder, laser illuminator, laser pointer, thermal imager,integrated day/night sight, visible light, GPS, and various othersensors.

In an exemplary embodiment, a lower receiver assembly is designed toaccommodate a wide range of barreled action receivers employing acommercial detachable box magazine. In alternative embodiments, a lowerreceiver assembly can be interchanged with another lower receiverassembly designed for a high capacity detachable box magazine using anoriginal or another barreled action.

In an exemplary embodiment, a butt stock assembly preferably hasmultiple stock configurations, including adjustable folding-retractableand fixed-adjustable butt stocks. The retractable configuration of thestock preferably enables varying the LOP to accommodate various types ofclothing (e.g., equipment vests and winter jackets) and also adjusts forvarying body types and sizes of individual shooters. The adjustablefolding-retractable stock preferably provides users with a high level ofergonomic fit, compactness, maneuverability, and transportability. Acam-locking device enables the butt stock assembly to be shortened orlengthened as desired by users. The locking hinge joint preferably canbe easily unlocked and folded by a gloved hand.

In an exemplary embodiment, the pistol grip assembly preferably can becomprised of a commercially off-the-shelf M16 style grip. This grip canincorporate an advanced variable angle hand grip adjustment feature thatenables the shooter to select an ergonomic grip angle for a variety ofshooting positions, enhancing accuracy, ergonomic gun fit, andfunctionality. Contemplated embodiments of the invention include amulti-axis hand grip.

In an exemplary embodiment, the lower receiver assembly is designed toreceive the barreled action upper receiver directly, employing abedding-less design technology without the need for an interface beddingmaterial to assure accuracy. This significantly reduces maintenance andmakes the rifle less susceptible to bedding failure caused by age,temperature extremes, moisture, cleaning solvents, and/or roughhandling.

In an exemplary embodiment, the rifle stock system preferably employsmultiple flush cup sling mounting points on the folding butt-stock,lower receiver, and forends. Flush cup sling attachment positions havebeen designed so that the rifle can be operated ambidextrously ordeployed from the slung position.

Various exemplary embodiments of the forend assembly employ multipleforend designs including: Picatinny rail free floating; squared target;tapered field; power cell; and power cell electro-optic. Forendassemblies can be selected according to the shooting conditions, events,operational requirements and user preferences for the shooting activity.

In still yet other embodiments, a tactical rifle stock includes amodular lower receiver. Indeed, various exemplary embodiments of themodular lower receiver accommodate a variety of barreled actionconfigurations. These preferably include but are not limited to actionsfrom Remington, Surgeon, Stiller, BAT, GA Precision, SAKO, Savage, andothers. Barrel types, sizes, and contours for tactical rifles may beselected based upon operational requirements all of which can beimplemented as free floating in accordance with embodiments of thepresent invention.

In an exemplary embodiment, a tactical rifle stock assembly includes amodular receiver that accommodates a standard five round detachable boxmagazine and an interchangeable lower receiver that accommodates a highcapacity detachable box magazine accommodates both SAAMI CIP and longerlength specification ammunitions. This high capacity detachable boxmagazine design is a double-to-single stack magazine with precisionintegrated angular cartridge de-stacking rails that manage the reliablefeeding of the cartridges into the chamber.

As discussed and illustrated herein, with reference to exemplaryembodiments of the present invention, various embodiments can be used toprovide a user-friendly, easy to configure weapons platform. The belowdiscussion, while provided in various sections, is to be read as a wholeand applies to this entire disclosure and the various discussedembodiments. Discussion of one or more features in a certain section orembodiment can also be pertinent to other features and embodimentsdiscussed in one or more other sections. In addition, while the claimsof this application may be directed to one or more features describedherein, this entire disclosure provides context to the appended claims,which may be directed to only certain features described herein.

Modular Stock Chassis System & Receiver

FIG. 1A illustrates an exemplary embodiment of a tactical rifle stockassembly 100 of the present invention. In accordance with an exemplaryembodiment, the tactical rifle stock assembly 100 can comprise severalsub-assembly components: a forend assembly 110; a receiver assembly 120;and a butt stock assembly 130. The assemblies 110, 120, and 130 arepreferably modular and interchangeable. This enables the tactical riflestock assembly 100 to be configured to accommodate either left or righthanded users. Additionally, the modularity of the assemblies 110, 120,and 130, in particular the ability to interchange the receiver assembly120, enables the tactical rifle stock assembly 100 to accommodate customor commercial barreled rifle actions. The modularity of the assemblies110, 120, and 130 also allows users to customize the tactical riflestock assembly 100 for different tactical applications, accessories, orsub-systems.

Each forend assembly 110 design can be coupled to each receiver assembly120 through a front assembly interface 101. Similarly, each receiverassembly 120 can be coupled to each butt stock assembly 130 through arear assembly interface 102. Therefore, a number of embodiments of thetactical rifle stock assembly 100 are contemplated, each having adifferent combination of assemblies 110, 120, and 130.

There are a variety of contemplated embodiments of the forend assembly110 design. For example, the forend assembly 110 may employ, but is notlimited to, any of the following designs: Picatinny Rail Free Floating;Squared Target; Tapered Field; Power Cell; and Electro-Optic Power Cell.Various features of the embodiments of the forend assembly 110 arediscussed in greater detail below.

A forend assembly 110 can be easily substituted by users for a differentforend assembly 110 design. The forend assembly 110 can preferably bedetached from the receiver assembly 120 by using simple hand tools. Thisfeature enables a user to change a forend assembly 110 to accommodatedifferent barreled actions, tailor-fit the forend 110 to a user's bodysize or shooting style, or customize the forend assembly 110 for one ormore tactical applications. For example, if a user desires an actionwith a different barrel for a different application, a different forendassembly 110 (i.e., larger, smaller, different geometry) can be coupledto the receiver assembly 120. Similarly, if the user desires to mount alarge number of accessories to the forend assembly 110, a forendassembly 110 having a large number of rails and mounting positions canbe selected and coupled to the receiver assembly 120.

As mentioned, the receiver assembly 120 can interface with a number ofdifferent actions. One receiver assembly 120 can interface with numerousdifferent actions or a receiver assembly 120 may be custom designed tointerface with only one type of action. The receiver assembly 120 for atactical rifle stock assembly 100 can be selected based upon the type ofaction the user desires to employ. For example, the receiver assembly120 may interface with, but is not limited to, any of the followingactions (left or right handed operation): Surgeon Short Action Repeater;Remington 700 Short Action; TRG-22, Surgeon XL Repeater; and Remington700 Long Action, Remington 700 Long Action Magnum, SAKO TRG-42, andothers.

The forend assembly 110, receiver assembly 120, and butt stock assembly130 of the tactical rifle stock assembly 100 are preferably constructedat least in part from 7075 T6 aluminum alloy. The aluminum alloycomponents of the assemblies 110, 120, and 130 are preferably precisionmachined and/or EDM wire cut from a heat-treated forged billet. In othercontemplated embodiments the assemblies 110, 120, and 130 can beconstructed from different metals or alloys such as 6061 aluminum,nickel, nickel alloy, titanium, titanium alloy, magnesium, magnesiumalloy, amorphous metal, or another suitable metal or alloy. In furthercontemplated embodiments, the assemblies 110, 120, and 130 can beconstructed in whole or in part from a nonmetallic material such asfiberglass, carbon fiber, or another suitable composite or polymermaterials.

The tactical rifle stock assembly 100 is preferably designed to belightweight. In other contemplated embodiments, the assemblies 110, 120,and 130 may be constructed from a material other than an aluminum alloyto further increase strength and reduce weight. For example, theassemblies 110, 120, and 130 can be constructed in whole or in part froma nonmetallic material such as fiberglass, carbon fiber, injectionmolded composites, magnesium, structured nano-materials, or othersuitable composite or polymer materials.

FIG. 1B illustrates separated assemblies 110, 120, and 130 of anexemplary embodiment of the tactical rifle stock assembly 100. Theforend assembly 110 can couple to the receiver assembly 120 at the frontassembly interface 101. The front assembly interface 101 can comprise aforend surface 115 and a front receiver surface 125. The forend surface115 and front receiver surface 125 are preferably precision machined tobe substantially negatives of each other (i.e., have correspondingsurfaces). The forend surface 115 can comprise a male portion or segmentdesigned to mate into a corresponding female segment on the frontreceiver assembly 125. The forend surface 115 can be joined to the frontreceiver surface 125 such that the forend assembly 110 and receiverassembly 120 are substantially fixed relative to each other. The forendsurface 115 and the receiver surface 125 can be brought into contact tojoin the assemblies 110 and 120 by hand, without the use of tools.

In other contemplated embodiments, the forend surface 115 may comprise asegment designed to vertically slide into a groove in the front receiversurface 125. For example, the forend surface 115 may comprise aprojection and the front receiver surface 125 may comprise acomplementary groove. Other coupling configurations have also beencontemplated for the forend surface 115 and front receiver surface 125,such as a sliding dovetail joint.

The forend surface 115 can comprise a through bore 116 spanning theforend receiver surface 115 and a portion of the truss work of theforend assembly 110. The front receiver surface 125 may comprise a firstreceiver bore 126 extending into the body of the receiver assembly 120.The through bore 116 and the first receiver bore 126 are preferablycoaxially aligned when assemblies 110 and 120 are joined. A firstassembly fastener 117 can be inserted through the through bore 116 andengage the interior of receiver bore 126. The fastener 117 preferablyrotationally engages the interior of receiver bore 126 to secure theforend assembly 110 to the receiver assembly 120. The fastener 117 canbe a bolt having a common thread pattern to allow for easy replacementif it is lost or damaged. In other contemplated embodiments, thefastener 117 can have a precisely selected thread pattern to allow forprecision tightening of the fastener 117 to a desired degree of torque.The fastener 117 can preferably be hand tightened by the user using asimple tool such as an allen wrench or socket wrench.

The butt stock assembly 130 can couple to the receiver assembly 120 atthe rear assembly interface 102. The butt stock assembly 130 and thereceiver assembly 120 are preferably coupled by a hinge 140. The hinge140 preferably enables the butt stock assembly 130 to translate from anextend position to a folded position relative to the receiver assembly120. In the extended position, the butt stock assembly 130 can beoriented inline with the receiver assembly 120. This orientationcorresponds to a traditional stock configuration. In the foldedposition, the butt stock assembly 130 can swing horizontally about thehinge 140 to a position parallel to and adjacent the receiver assembly120. The position of the butt stock assembly 130 can be easily selectedby a user based on preference or tactical need. The butt stock assembly130 can swing to the left or to the right relative the receiver assembly120 based upon the embodiment of the hinge 140 employed in the tacticalrifle stock assembly 100. The configuration and structural details ofthe embodiments of the hinge 140 will be discussed in greater detailbelow.

The receiver assembly 120 can comprise a rear receiver surface 127.Similarly, the butt stock assembly 130 can comprise a front butt stocksurface 135. The hinge 140 can comprise a front hinge surface 141 and arear hinge surface 142. The rear receiver surface 127 can correspond inshape and area to the front hinge surface 141. The rear receiver surfacecan comprise a first shoulder 129 and a second shoulder (not pictured)on the sides of the receiver assembly 120 to extend the width of therear receiver surface 127 to match that of the front hinge surface 141.Similarly, the front butt stock surface 135 can correspond in shape andare to the rear hinge surface 142.

The front hinge surface 141 can comprise a front hinge projection 147.In an exemplary embodiment, the front hinge projection 147 can extendvertically the height of the front hinge surface 141. The front hingeprojection 147 is preferably disposed in the center of the front hingesurface 141 and is approximately ⅓ the width of the front hinge surface.In other embodiments, the front projection can be shorter, wider,narrower, or offset from the center.

The rear receiver surface 127 can comprise a rear receiver groove 128.The rear receiver groove 128 is preferably substantially equal inheight, width, and depth to the front hinge projection 147. The hinge140 can be joined to the receiver assembly 120 by bringing the fronthinge surface 141 in contact with the rear receiver surface 127 andinserting the front hinge projection 147 into the rear receiver groove128. The insertion of the front hinge projection 147 in the rearreceiver groove 128 can prevent the rear receiver surface 127 and fronthinge surface 141 from rotating relative to each other. The receiverassembly 120 can comprise a rear lip (not pictured) that can extend fromunderneath the rear receiver surface 127 and can contact the bottom ofthe hinge 140 when the hinge is joined to the receiver assembly 120. Therear lip can further prevent rotation of the hinge 140 relative to thereceiver assembly 120 when the two are joined.

The hinge 140 can comprise a first hinge through bore 142. The rearreceiver surface 127 can comprise a corresponding second receiver bore(not pictured). The first hinge through bore 142 and the second receiverbore are preferably substantially coaxially aligned when the hinge 140is joined to the receiver assembly 120. A first hinge fastener 143 canpass through the bore 142 and engage the second receiver bore to securethe hinge 140 to the receiver assembly 120. The fastener 143 can be ofsubstantially the same type as fastener 117, and can preferably be handtightened by the user using a simple tool such as an allen wrench orsocket wrench.

The rear hinge surface 142 can be substantially similar in area andshape to the front hinge surface 141. The rear hinge surface 142 cancomprise a rear hinge projection 146 that is substantially similar tothe front hinge projection 147. The front butt stock surface 135 cancomprise a butt stock groove 136 corresponding to the rear hingeprojection 146 and substantially similar to the rear receiver groove127. The hinge 140 can be joined to the butt stock assembly 130 bybringing the rear hinge surface 142 in contact with the front butt stocksurface 135. The rear hinge projection 146 can be inserted into the buttstock groove 136 in substantially the same manner as described abovewith regard to projection 147 and groove 128. The projection 146 andgroove 136 can prevent rotation of the hinge 140 relative to the buttstock assembly 130.

The hinge 140 can comprise a second hinge through bore 144. The buttstock assembly 130 can comprise a butt stock bore (not pictured). Thesecond hinge through bore 144 and the butt stock bore are preferablysubstantially coaxially aligned when the hinge 140 is joined to the buttstock assembly 130. A second hinge fastener 145 can pass through thesecond hinge bore 144 and engage the butt stock bore to secure the hinge140 to the butt stock 130. The fastener 143 can be of substantially thesame type as fastener 117, and can preferably be hand tightened by theuser using a simple tool such as an allen wrench or socket wrench.

FIG. 1C illustrates a side view of an exemplary embodiment of a frontassembly interface 101. In accordance with this exemplary embodiment,the forend surface 115 can comprise a forend projection 111. Theprojection 111 can comprise a pair of flanges 113 (one flange pictured)extending from the forend surface 115 along the projection 111. Thefront receiver surface 125 can comprise a cavity 112, and a pair ofgrooves 114.

The cavity 112 can correspond in shape and size to the projection 111.The forend 110 can be joined to the receiver 120 by bringing the forendsurface 115 into contact with the front receiver surface 125, andinserting the projection 111 into the cavity 112. The flanges 113 canslide into the grooves 114. The projection 111 fitted into the cavity112 prevents the forend assembly 110 from rotating relative to thereceiver assembly 120.

FIG. 1D illustrates a bottom view of an exemplary embodiment of a frontassembly interface. The projection 111 can comprise through bores 118.The through bores 118 can vertically span the height of the projection111. The receiver 120 can comprise receiver bores 119. The receiverbores 119 can be disposed vertically in a portion of the receiver 120above the cavity 112. The through bores 118 and the receiver bores 119can be coaxially aligned when the projection 111 is inserted into thecavity 112.

The forend assembly 110 can be secured to the receiver assembly 120 bypassing two fasteners through the bores 118 and engaging bores 119. Thefasteners prevent the projection 111 from sliding out of the cavity 112.The fasteners can be of substantially the same type as fastener 117, andcan preferably be hand tightened by the user using a simple tool such asan allen wrench or socket wrench. In other contemplated embodiments, thefasteners can be counter-bored screws. In other contemplatedembodiments, fewer or more bores may be employed in the projection 111and the receiver assembly 120 to secure the forend assembly 110 to thereceiver assembly 120.

The above description relating to the embodiment illustrated in FIGS. 1Aand 1B demonstrates the modularity of the tactical rifle stock assembly100. The forend assembly 110, receiver assembly 120, and butt stockassembly 130 can be easily coupled and detached from each other by auser by means of simple hand tools or the coupling may be tool-less.This feature enables users to quickly interchange assemblies based upontactical need or personal preference. It also provides for easyreplacement and upgrade of assemblies 110, 120, and 130 in the future.Modularity greatly improves the versatility of the tactical rifle stockassembly 100 and expands its operational applications.

Improved Long-Range Bolt Action Weapons Platform

FIG. 2A illustrates a perspective view of an improved long-range boltaction weapons platform 200 in accordance with some embodiments of thepresent invention. In this illustration, the weapons platform 200 is abolt-action rifle. In other embodiments, the weapons platform 200 can beother types of firearms. In line with the above discussion, the weaponsplatform 200 can be comprised of several modular components. Thesemodular components can generally include a forend portion 210 (or aforend), a receiver portion 220 (or a receiver), and a buttstock portion230 (or buttstock or butt stock). Each of the forend 210, receiver 220,and buttstock 230 may also comprise one or more components making up theportions and/or accessory components. The forend 210 generally extendsfrom the receiver 220 proximate a barrel of the weapons platform 200,the receiver portion 220 is generally positioned in a middle area of theweapons platform 200, and the buttstock 230 is generally positioned in arear area of the weapons platform 200. The receiver 220 can include anaction portion 220A, barrel portion 220B, and cartridge receivingportion 220C.

In currently preferred embodiments of the present invention, and asdiscussed herein, the forend 210, receiver 220, and buttstock 230portions are configured as modular components. This feature enables theweapons platform 200 to be configured in accordance with user desiresand also provides a weapons platform that is easily configurable.Indeed, the weapons platform 200 can be assembled and disassembled intoits modular components as desired with no specialized, professionaltraining. Currently known bolt-action rifles are not configured inmodular fashion and do not comprise modular components. Rather,currently known bolt-action rifles are provided as integral weaponsplatforms not capable of being assembled and disassembled withoutspecialized, professional training and retain their accuracy andreliability.

Modular weapons platforms, such as weapons platform 200, configured as abolt-action rifle provides various advantageous features. For example,such modular configuration can enable utilization of one or morerelocatable rail attachment surfaces (e.g., Picatinny rails), unitizingmonolithic rails in various cants, unitizing monolithic rails andadapters for commercial receivers, custom actions, free floatingenclosed forends, co-bore aligned mounts for electro-optics, multipletype field support attachments (e.g., tri-pod, bi-pod, mono-pod), and abedding less body style (as discussed above).

Various such features are illustrated in FIG. 2A. For example, rail 212Acan be provided as a relocatable rail attachment surface capable ofbeing relocated at various positions and surfaces along an exteriorsurface of the forend 210. Similarly, rail 212B (not shown) can beprovided on an exterior surface opposite the rail 212A and rail 212C canbe provided on an underside surface of the forend 210. The rails 212A,212B, 212C can be repositioned using various attachment points providedon the forend 210. In currently preferred embodiments, the rails 212A,212B can be relocated and secured to different positions via a series ofapertures disposed on an exterior surface of the forend 210. Forexample, and as shown in FIG. 2A, aperture series 214A, 214B, 214C arerespectively collocated on the exterior surface of the forend. As shown,the aperture series 214A, 214B, 214C each comprise three apertures—withone aperture being covered by the rail 212A and two being exposed.Respective co-located apertures within the each of the aperture series214A, 214B, 214C are preferably formed in a linear position such thatthe rail 212 can be mounted in a linear and parallel relationship with abore axis of the weapons platform 200. The rails 212A, 212B, 212C can beprovided to have multiple lengths as desired.

Another illustrated advantageous feature of the weapons platform 200 isthe unitized monolithic rail 216. The unitized monolithic rail 216 maybe a Picatinny 1913 spec rail and may also be chosen to be any otherrail attachment surface as desired. As shown, the unitized monolithicrail 216 has a length that extends from a distal end of the receiver 220proximate to a distal end of the forend 210. Due to the length of theunitized monolithic rail 216, it spans and unites the forend portion 210and the receiver portion 220. An advantage of the unitized monolithicrail 216 includes increased rigidity of the weapons platform 200.Another advantage includes reduction of torsional flex of the weaponsplatform 200 when firing. In addition, the unitized monolithic railenables improved recoil management.

In some embodiments, the unitized monolithic rail 216 can haveadvantageous interface characteristics between the forend 210 and thereceiver 220. For example, the monolithic rail 216 may comprise one ormore apertures spaced apart over its length. Mounting screws and/or lugscan be inserted in these apertures and also into respective mountingapertures in the forend 210 and the receiver 220. In currently preferredembodiments, one or more cylindrical recoil lugs can be used to attachthe monolithic rail 216 to the forend 210 and/or the receiver 220.Recoil lugs enable the transfer of shock recoil away from utilizedmounting screws 230 and onto the receiver 220 of the weapons platform220. Such transformation of energy aids in dissipating and reducingrecoil shock energy over the length and exterior surface of the weaponsplatform 200.

In some embodiments, an interface coupling 218 can be used. An interfacecoupling 218 can be used to provide an interface between the unitizedmonolithic rail 216 and the receiver 220. The interface coupling 218 ispreferably shaped to be securedly attached to a top exterior surface ofthe receiver 220A. The interface coupling 218 can also be shaped toreceive and securedly carry an underside surface of the unitizedmonolithic rail 216. The interface coupling 218 can also carry one ormore recoil lugs that can be used for securedly affixing the unitizedmonolithic rail 216. An interface coupling 218 may not be necessary withall embodiments of the present invention, and may only be desired whenutilizing certain commercially available receivers, for example.

Yet another feature of some embodiments of the present inventionincludes coupling the forend 210 to the receiver 220. In someembodiments, the forend 210 can be coupled to the receiver 220 via aconnection portion 219. The connection portion 219 preferably has aplurality of apertures. The apertures are preferably capable ofreceiving securing mechanisms (e.g., screws, bolts, etc.) for securedlyattaching the forend 210 to the receiver 220. In similar fashion, thereceiver 220 preferably includes corresponding apertures to receivesecuring mechanisms for securedly holding the securing mechanisms.

Yet another feature of embodiments of the present invention relates toan improved center of mass region. As shown by the square, dashed-linebox labeled “CGM Area,” embodiments of the present invention can have acenter of mass area situated in an area extending from the receiver tothe receiver/forend interface. It should be understood that the exactcenter of mass will depend on many different variables; however, thisthe CGM Area is an approximate location for certain embodiments, such asthe weapons platform provided in FIG. 2A. This improved center of massregion provides a balanced weapons platform that enables users to carryand transport the weapons platform.

Truss-Type Configured Forend Configuration

Other advantageous features of some embodiments of the present inventionrelate to a truss-type configured forend construction. FIG. 2Billustrates a perspective view of a truss-type configured forend 210used in accordance with some embodiments of the present invention. FIG.2C illustrates an exploded view of a truss-type configured forend 210used in accordance with some embodiments of the present invention. Asshown in both FIGS. 2B-2C, the forend 210 can include an upper portion221, a lower portion 222, and a middle beam 223. The middle beam 223 canbe disposed generally between the upper portion 221 and the lowerportion 222. A series of truss structures can be spaced apart along thelower portion 222 and provide strength for supporting the forend 210.

The forend 210 configuration illustrated in FIG. 2B is designed to belightweight yet capable of providing structural integrity and enabling asupport structure to provide a free-floating barrel configuration. Asillustrated, the upper portion 221 comprises a series of circular shapedrings 224A, 224B, 224C, 224D that define a linear gap 225. The lineargap 225 can stretch the length of the forend 210. In currently preferredembodiments, the linear gap 225 is sized to envelop a barrel (likebarrel 220B) disposed in the linear gap 225 yet not directly contact thebarrel. No direct physical contact enables the barrel to befree-floating in the linear gap thereby providing a mechanical freeconnection between a barrel of a weapons platform and the forend 210.The series of circular shaped rings 224A, 224B, 224C, 224D may be shapedin other geometric forms (e.g., elliptical, ovoid, rectangular, square,triangular, etc.) capable of yielding the linear gap 225. In addition,the series of circular shaped rings 224A, 224B, 224C, 224D can be tiedtogether with tying mounts 226A, 226B. As shown, the tying mounts 226A,226B can securedly attached to the circular shaped rings 224A, 224B,224C, 224D. The circular shaped rings 224A, 224B, 224C, 224D, asillustrated, can also be configured for attachment to the middle beam223. Still yet, the circular shaped rings 224A, 224B, 224C, 224D cancomprise apertures formed in their exterior surfaces for carryingattachment rail surfaces (e.g., Picatinny rails).

The middle beam 223 enables the upper portion 221 to interface with thelower portion 223 of the forend 210 and enables the lower portion 223 tobe provided as a truss-weight support system 226. The truss-weightsupport system 226 is generally disposed between the middle beam 223 anda bottom portion 227 of the forend 210. The bottom portion 227 forms anexterior bottom surface of the forend 210 and may comprise one or moreexterior handling surfaces enabling users to hold the forend 210. Thetruss-weight support system 226 design advantageously provides a rigidcantilever at limited weight that provides a stable platform for theoptical mounting rail while maintaining a free-floating barrel foraccuracy.

Webs and spans are arranged to provide support for stress points in thetruss-weight support system 226. For example, and as shown, in FIG. 2B,the truss-weight support system 226 can comprise one or more spacedapart truss sections. The spacing apart of the truss sections can definegaps between the truss sections. As shown, the truss sections can bepositioned in various manners between the middle beam 223 and the bottomportion 227. For example, truss members 228A, 228B are positionedgenerally orthogonal to the middle beam 223 and the bottom portion 227.In another example, truss member 229 can comprise multiple portions229A, 229B (e.g., in a general V-shape). The multiple portions 229A,229B can be disposed at an angle to the bottom portion 227 and convergetogether proximate the middle beam 223.

The truss-weight support system 226 can also comprise other features.For example, the truss-weight support system 226 can comprise one ormore swivel attachment points. One such swivel attachment point can be adual flush cup sling swivel attachment point 231. The dual flush cupsling swivel attachment point 231 can be located proximate a forward endof the forend 210. This forward end can be positioned proximate a bipodspigot 232. The bipod spigot 232 can support use of various bipod styles(e.g., AMSD, Parker Hale and Versapod).

Other features of the truss-weight support system 226 include sectionpartition members 233, 234. The section partition members 223, 234 canbe disposed to partition the lower portion 223 in multiple sections andto support the middle beam 223. In some embodiments, the multiplesections may have varying widths such that tapering of the lower portion223 is achieved.

The forend portion 210 can also be configured to enable various heatmanagement features. For example, as shown in FIGS. 2B-2C, the forendportion 210 can be openly exposed such that the truss-weight supportsystem 226 is open to the surrounding environment, such as ambient air.Such openness enables a cooling system by enabling a barrel placed inthe linear gap 225 to dissipate heat. Indeed, such an embodiment may bedesignated as a free floating forend that is designed to be lightweightyet maximize ambient airflow around a free floating barrel. An open freefloating configuration can also enable reduced mirage associated withheat leaving the barrel surface.

In addition, and according to some embodiments, the forend portion 210can comprise one or more heat shields. For example, and as mentionedabove, the tying mounts 226A, 226B can be configured as heat/mirageshields 226A, 226B. The heat/mirage shields 226A, 226B, as shown, can bedisposed along the forend 210 on either side of the forend 210. Theheat/mirage shields 226A, 226B can be disposed such that they preventheat dissipation from a barrel situated below the shields 226A, 226Bfrom passing proximate devices mounted onto a rail attachment surfacedisposed on the forend 210. As a result, the heat/mirage shields 226A,226B can prevent barrel heat from dissipating upward into a line ofsight of utilized optics. Heat dissipated from a barrel can create amirage and obstruct view through the scope or adversely affect lasersand sensors. Thus, heat/mirage shields 226A, 226B can be provided toshield line of sights from deteriorating. It should be understood thatmore heat/mirage shields can be utilized and that position of theheat/mirage shields can vary in accordance with various embodiments ofthe present invention. For example, and as discussed below, heat/mirageshields can be configured to envelop the upper portion 221 and the lowerportion 222 of the forend. In addition, multiple heat/mirage shields canbe mounted on the rings 224A, 224B, 224C, 224D so that the linear gap225 is shielded in full by multiple heat/mirage shields.

FIG. 2C also shows various additional features of embodiments of thepresent invention. As shown, FIG. 2C illustrates an exploded exemplaryembodiment of a forend 210. The forend 210 can comprise a picatinny railfree floating forend and a forend body 235. A picatinny accessory railbridge 236 is can be coupled to the forend body 235. The picatinnyaccessory rail bridge 236 can partially define the linear gap 225 thatis discussed above. The linear gap 225 can be a hollow precisioncylindrical channel through which various barrels can be spanned.

The forend 210 can also have other features in other embodiments. Forexample, the forend 210 may comprise a top Picatinny rail designated atthe 0 degree position, a right side Picatinny rail designated at the 90degree position, and a left side Picatinny rail at the 270 degreeposition. Right and left side angled Picatinny rails 237 may also belocated at the 135 degree and 225 degree positions. In yet anotherembodiment, a Picatinny rail 238 can be attached to the bottom of theforend 210 at the 180 degree location.

The Picatinny accessory rail bridge 236 preferably comprises a pluralityof mounting points to which one or more Picatinny rails can be attached.A top Picatinny rail can be attached on the top of the Picatinnyaccessory rail bridge 236, also designated as the 0 degree position. Thetop Picatinny rail can be preferably approximately 305 millimeters/12inches in length. Side Picatinny rails can be each approximately 109millimeters/4.3 inches in length. The Picatinny rails can serve asdedicated mounting points for optical equipment. In other contemplatedembodiments, more or fewer rail attachment members may be employed in aplurality of different positions according to operational requirements.Thus, it should be understood that more, fewer, or differentlyconfigured attachment devices can be used in accordance with the variousembodiments of the present invention.

In some currently preferred embodiments, a top Picatinny rail can be aunitized monolithic Picatinny rail that locks the forend to a barreledaction and lower receiver. Side Picatinny rails can be attached to thePicatinny accessory rail bridge 236 parallel to the top Picatinny railat 320/90 degree and 330/270 degree. The top Picatinny rail can beapproximately 490 millimeters/19.3 inches in length. Other suitablelengths have been contemplated for both the top and side Picatinny railsand may be employed in various embodiments. In a further contemplatedembodiment, an integrated Picatinny rail section 238 is disposed at the180 degree position along the bottom front of the forend 210. ThisPicatinny Rail section 238 provides a connection point for bipods,sensors, lasers, pointers, range finders and illuminators.

In other contemplated embodiments, the forend 210 may comprise a SquaredTarget, Tapered, Power Cell, and Power Cell Electro-Optic forend designfeatures. The Squared Target Forend (STF) is also a modular forendembodiment that is comprised of a wide flat bottom popular in thecompetition and target shooting communities. The STF employs anintegrated bridge rail system allowing for the attachment of varioustypes of bipod field stabilization devices and electro-optic devices.The STF can be manufactured from precision machined lightweight highstrength alloys, plastics composites, and advanced polymers. A squaredconfiguration preferably comprises a textured tactile surface to enablethe shooter to ergonomically grip the forend of the weapons platform200.

The Tapered Forend (TF) is another modular design embodiment thatfeatures a tapered bottom popular in the tactical competition, targetshooting, and hunting communities. The TF also employs an integratedbridge rail system allowing for the attachment of various types of bipodfield stabilization devices and electro-optic devices. The TF can bemanufactured from precision machined lightweight, high-strength alloys,plastics, composites, and advanced polymers.

The Power Cell Forend (PCF) is another modular embodiment that featuresan integrated power cell (battery) and charging circuitry housed in awaterproof compartment. The PCF provides power for visible lights,infrared pointers, and illuminators, lasers, range finders, night visionand thermal devices attached to the rifle. The PCF can utilizecommercially off the shelf batteries (e.g. AA, 123, etc.), militarybatteries, or rechargeable batteries. The PCF can also comprise aconnector enabling a power cell to be recharged with 9-32 vdc, 120 vacor 220 vac power sources. The PCF can also use an integrated bridge railsystem allowing for the attachment of various types of bipod fieldstabilization devices and electro-optic devices. The PCF can bemanufactured from precision machined lightweight, high-strength alloys,composites plastics, and advanced polymers.

The Power Cell Electro-Optic Forend (PCEOF) is an advanced modulardesign that features an integrated power cell (battery) and changeablemulti-function electro-optic modules. The onboard power cell andelectro-optics (EO) module can be housed in waterproof shock resistantmounts within the forend. The integrated EO module is specificallydesigned to be inserted into a forend receptacle cavity and interface inthe forend. The PCEOF can incorporate a multi-function sensor or EOmodule comprised of different combinations of visible lights, infraredpointers and illuminators, lasers, range finders, night vision, thermaland GPS devices. The PCEOF utilizes either commercially off-the-shelfbatteries (i.e. AA, 123, etc.), military batteries, or rechargeablebatteries. The PCEOF incorporates a connector that allows the power cellto be recharged with 9-32 vdc, 120 vac or 220 vac power sources, orpowered off-board from other power sources (e.g. vehicles, radiobatteries, solar cells, etc.). The PCEOF can include an integratedbridge rail system allowing for the attachment of various types of bipodfield stabilization devices and electro-optic devices. The PCEOF can bemanufactured from precision machined lightweight, high-strength alloys,plastics composites, and advanced polymers.

In other contemplated embodiments, the forend 210 preferablyaccommodates detachable accessories. These may include night vision andthermal imaging devices, visible/IR laser pointers, illuminators,lasers, range finders, white lights, sensors, and other electroniccomponents. Such accessories can be attached to a Picatinny Rail orother such attachment point. In other contemplated embodiments, theforend 210 includes an environmentally protected electro-optic/sensormodule compartment for housing electronic components such as a laserrange finder, GPS, DMC (Digital Magnetic Compass), anti-cant, visiblelaser pointer, infrared laser pointer, environmental sensors, and otherelectronic components.

In further contemplated embodiments, the forend 210 preferably includessling attachments. For example, the forend 210 can include two slingattachment points at concentric points along the modular forend assembly235, one on the lower receiver 220 and two on the butt stock 230. Theattachment points can be recessed flush mounted sling swivel cups toenable the use of a variety of detachable rifle slings and userpreferences.

Thermal Heat Mirage Management System & Other Modular Forend Features

Other advantageous features of some embodiments of the present inventionrelate to a forend comprising a thermal heat mirage management systemand other modular components. FIGS. 2D through FIG. 2I illustratevarious features of a forend in accordance with the various embodimentsof the present invention. FIG. 2D illustrates an exploded view of anenclosed forend showing various forend features in accordance with someembodiments of the present invention. FIG. 2E similarly illustratesvarious modular sub-components of a forend in accordance with someembodiments of the present invention. FIG. 2F illustrates a close-up,perspective view of an enclosed forend used in accordance with someembodiments of the present invention, and FIG. 2G illustrates across-sectional view of an enclosed forend used in accordance with someembodiments of the present invention. FIG. 2H illustrates a close-up,underside view of an enclosed forend used in accordance with someembodiments of the present invention. FIG. 2I illustrates anothercross-sectional view of an enclosed forend used in accordance with someembodiments of the present invention. The various forends illustrated inFIGS. 2D-2I may be used as forends for the weapons platform 200.

In some embodiments, such as those illustrated in FIGS. 2D-2I, theweapons platform 200 can comprise a thermal heat mirage managementsystem 240. The system 240 can include various internal and externalcomponents to remove heat from undesired areas. For example, the system240 can be configured to wick heat from away the barrel in a controlledfashion. This advantageously enables reduction of mirage effects,whether in an inverted trough version, or a tubular version with anenclosed fore-end cap. The system 240 can include a chassis tube portion242 and a forend cap portion 244. In some embodiments, the system 240may also include the connection portion 219 and/or the receiver portion220.

The various components of the system 240 are preferably configured toabsorb, remove, and/or isolate heat such that dissipated heat does notinterfere with accessory devices mounted on the weapons platform. Forexample, the forend tube portion 244 is preferably configured to envelopa barrel such that heat emitted in the linear gap 225 due to firing ofthe weapons platform 200 remains substantially disposed in the forendtube portion 242. By virtue of heat being contained within the tubeportion 242, the heat can be absorbed and wicked toward other componentsof the weapons platform 200. As a result, in some embodiments, theconnection portion 219 may be a first heat sink and the receiver portion220 may be a second heat sink. Provision of a double heat sink featurewith varying heat conducting materials enables movement of heat awayfrom a barrel of the weapons platform in an advantageous manner.

As best shown in FIGS. 2D and 2E, the forend 210 can be configured as aheat containing tube. The forend tube portion 242 can be shaped at itsends to receive corresponding end portions of the connector 219 andforend cap 244. As illustrated, ends of the connector 219 and forend cap244 can be sized and shaped for insertion into the forend tube portion242. Such a feature enables a tight fit in providing a rigid yetlightweight forend 210. In accordance with some embodiments, fastenerscan be used to mechanically couple the connector 219 and the forend cap244 to the forend tube portion 242. When joined together, the connector219, the forend cap 244, and the forend tube portion 242 define aninterior space, such as linear gap 225. A barrel can be inserted throughthe interior space such that it floats within the tube. In other words,the forend tube portion 242 can envelop a barrel—yet not mechanicallytouch the barrel. This advantageous feature of some embodiments of thepresent invention ensures that barrel accuracy performance is nothindered by objects contacting the barrel.

The various components of the thermal heat mirage management system 240can be implemented with various materials. For example, the connector219, the forend cap 244, and the forend tube portion 242 can be formedof a lightweight yet sturdy material. One or more of these componentscan be formed with lightweight material that has non-heat conductiveproperties. For example, in currently preferred embodiments, theconnector 219, the forend cap 244, and the forend tube portion 242 canbe fabricated from carbon-based composites. Currently preferredembodiments include pre-peg carbon fiber. Other lightweight materialssuch as various aluminum alloys may also be used in some embodiments.

Other advantageous features of some embodiments of the present inventionrelate to a forend 210 comprising various advantageous forend 210features. As discussed above, the forend 210 can comprise a tube 242that can be provided with a cap 244. The tube 242 can be sized andshaped in many ways as desired by a user. In addition, the tube 242 canbe configured to hold and/or carry a number of attachment surfaces.Attachment surfaces (e.g., Picatinny rails) can be used for carrying ormounting accessory devices for use with a weapons platform. In addition,the tube 242 can define an interior space through which a weaponsplatform barrel can be enabled to free float. The cap 244 can be used toseal the tube 242 in accordance with some embodiments.

By sealing the tube 242, and in accordance with some embodiments, thecap 244 can provide a compartment or a mounting assembly. For example,the cap may include a compartment or mounting facility for a variousaccessories such as GPS, shot counters, beacons, spare parts, laser,etc. In other embodiments, the cap 244 and/or the tube 242 may also beused as a storage compartment or a mounting surface for a power source(e.g., batteries, solar panels, etc.). In still yet other embodiments,the cap 244 and/or the tube 242 may also be used as a storagecompartment or a mounting surface for various electro-optic modules.

The tube can have various exterior characteristics. For example, in someembodiments, the tube 242 can be a non-cylindrical shape. For example,the tube may be shaped so that it has a generally square or rectangularshape. Such shapes can enable exterior surfaces having improvedergonomic abilities and enabling ease of attaching various mountingsurfaces (e.g., attachment rails) and quick disconnects for slings.

As best shown in FIGS. 2D and 2E, the forend 200 can comprise aconnector 219 (or a mating block). This feature can serve as a modularinterface between the forend 210 tube portion 242 and a receiver. Theuse of the mating block 219 at a fore-end rear frame to the mid-sectionof the stock provides a repeatable return-to-zero mounting, withsubstantial structural strength, and effective heat transfer. While amating block is currently preferred, some embodiments of the presentinvention need not be equipped with such a feature. In this manner, anintegral tube portion 242 can be directly connected to a receiver withno interface features.

Receiver Assembly

FIG. 3A illustrates a lower rear perspective view of an exemplaryembodiment of the receiver assembly 120. The receiver assembly 120 cancomprise a housing 121. The housing 121 is preferably cast as a singlecomponent from one of the alloys described above. Embodiments of thereceiver assembly 120 are preferably configured to accommodate a varietyof (left hand/right hand) barreled action configurations including:Surgeon Short Action Repeater; Remington 700 Short Action; TRG-22,Surgeon XL Repeater; and Remington 700 Long Action, Remington 700 LongAction Magnum, SAKO TRG-42, and others. An embodiment of the receiverassembly 120 may be capable of accommodating several different barreledaction configurations or may be specifically designed to accommodateonly one particular barreled action. The receiver assembly 120 of thetactical rifle stock assembly 100 can be selected to accommodate abarreled action configuration desired by the user. The receiver assembly120 can be interchanged and coupled to the forend assembly 110 and buttstock assembly 130 as described above with reference to FIGS. 1A and 1B.

The receiver assembly 120 can further comprise a trigger guard 122. Thetrigger guard 122 is preferably an integrated component of the receiverassembly 120. The geometry of the trigger guard 122 may be dimensionedto accommodate a shooter's bare hand, use of Mission Oriented ProtectivePosture (“MOPP”), and cold weather gloves when operating the trigger inhot and cold weather. The receiver assembly 120 can comprises a magazinewell 401 adapted to receive a five round and/or ten round magazine.

FIG. 3B illustrates an upper frontal view of an exemplary embodiment ofthe receiver assembly 120. The lower receiver assembly 120 preferablyemploys a double flush cup sling swivel 1211 attachment point on therear of the housing 121. The receiver assembly 120 can comprise anaction bay 124 adapted to accommodate and interface with variousbarreled actions. The action bay 124 preferably utilizes a precisionbeddingless interface, eliminating the need for an epoxy like compoundto mate the receiver assembly 120 to a barreled action. Beddingcompounds are necessary to mate an action to a conventional stockbecause the receiver of a conventional stock is not a precision machinedpart. The action bay 124 is precision machined to specific tolerances toenable an exact fit to a barreled action without the need for beddingcompounds. The action bay 124 preferably enables a direct drop-in boltdown installation capability between the receiver assembly 120 and thebarreled action for commercial and custom barreled rifle actions. Userscan employ a typical hex or Torx wrench to tighten two or more actionretaining bolts to secure the barreled action to the receiver assembly120.

As mentioned herein, components of the receiver assembly can beprecision machined to enable a tight fit between components. Forexample, the barreled action and the lower receiver 120 of the tacticalrifle stock assembly 100 can be precision mated such that they do notmove relative to each other. It is believed that the barreled action andreceiver 120 move in unison when in operation, transferring the forcethrough the tactical rifle stock assembly 100 thereby reducing impactand recoil.

The receiver assembly 120 can comprise a magazine release lever 123A.The magazine release lever 123A can secure and release a box magazine400 into the magazine well 401 of the receiver assembly 120. Themagazine release lever 123A preferably locks and unlocks to facilitatedetachment of the box magazine 400 from the magazine well 401 of thereceiver assembly 120. The release lever 123A preferably eliminates orgreatly reduces the occurrence of a detachable box magazineinadvertently dropping out of the rifle when in use.

The magazine release lever 123A is preferably protected against impact,and positioned for ease of use by the shooter with either hand. Themagazine release lever 123A can be spring loaded by a magazine leverspring 123B. The magazine release lever 123A and the magazine leverspring 123B can be pivotally coupled to the receiver assembly 120 usinga lever pin 123C. The magazine release lever 123A enables the shooter torelease and replace a magazine without disturbing the position of thetactical rifle stock assembly 100. The magazine release lever 123A canbe located in front of the trigger guard 122. This may allow the shooterto reload tactical rifle stock assembly 100 with one hand. In othercontemplated embodiments, a M16 style button magazine release can beused in place of the magazine release lever 123A on the side of themagazine well 401. In other contemplated embodiments, the lever 123A maybe recessed to prevent the accidental release of the magazine.

The receiver assembly 120 and magazine well 401 can be configured suchthat the box magazine 400 does not extend below the level of the pistolor hand grip (not pictured) to ensure that the magazine 400 does notcompromise the usability of the tactical rifle stock assembly 100. Thereceiver assembly 120 is preferably adapted to accommodate a wide rangeof rugged military specification detachable box magazines, includingbelted magnums (i.e. 7 mm Magnum and 300 Winchester Magnum) and .338Lapua Magnum/8.6×70 mm.

FIG. 4A illustrates a front perspective view of an exemplary embodimentof a ten round detachable box magazine 400. The magazine 400 can beinserted into the magazine well 401 of the receiver assembly 120described above with regard to FIG. 3B. A traditional bolt action rifleemploys a five round box magazine. The embodiments of magazine 400 aredesigned and adapted to house and feed ten rounds into a bolt actionrifle, in particular to a barreled action coupled to the tactical riflestock assembly 100. One of the clear advantages of a ten round magazineis that the user can shoot twice the number of rounds before reloadingthan with a five round magazine. When shooting long range, reloading candisrupt the position of the rifle, causing the user to lose sight of thetarget. FIG. 4B illustrates a back perspective view of an exemplaryembodiment of a ten round detachable box magazine 400.

FIG. 4C illustrates a disassembled view of an exemplary embodiment of aten round detachable box magazine 400. The box magazine 400 can comprisea body 402. The body 402 can be constructed from stainless steel and canbe coated with Tenifer® for corrosion resistance and surface hardening.In other contemplated embodiments, the body 402 can be constructed fromany of the metals, alloys, or materials described above. Other materialsinclude ceramic, ceramic-based, and material coated with via physicalvapor deposition process.

The body 402 can have a first side 403 and a second side 404. The firstside 403 and the second side 404 are preferably substantially identicalminor images of each other. The first side 403 and the second side 404can be precision stamped and TIG welded to the magazine base plate 405.A magazine locking lug 406 can be positioned and TIG welded to the backside of the body 402 of the magazine 400 to secure the upper portions ofthe first side 403 and second side 404 together. The first side 403 andthe second side 404, when joined together, can form a cavity forreceiving cartridges. The upper portion of the body 402 can have anopening for loading cartridges into the magazine 400.

The width of the cavity within the body 402 is preferably greater thanthe width of a cartridge. The cartridges preferably load into the body402 in an offset double stack orientation. For example, half of thecartridges may abut the first side 403 and half may abut the second side404 in an alternating manner.

The magazine 400 can comprise a follower 409 preferably having surfacesoriented at approximately 25 and 90 degree complementary angles thatstabilize and elevate the cartridge stack toward the top of themagazine. The follower 409 can be urged upward within the magazine by amagazine spring 410. The magazine spring 410 can have a flat non-bindingconfiguration. A fastener 411 can attach the magazine spring 410 to thefollower 409. The magazine spring 410 is preferably heat treated toassure that it does not deviate from its spring constant under varyingthermal conditions. The heat treated magazine spring 410 preferablyprovides a uniform level of pressure on the follower 409 such thatcartridges are reliability feed into the chamber with a partially fullor full magazine 400.

The width of the follower 409 is preferably less than the width of thecavity within the body 402. When a first cartridge is loaded into themagazine 400, it presses against the angled surface of the follower andurges the follower 409 against the first side 403 and the follower 409urges the first cartridge against the second side 404. The nextcartridge that is loaded is preferably in contact with the firstcartridge and the first side 403. In this manner, the cartridges can beloaded in an offset double stack configuration.

A first lip 408A can extend from the top portion of the first side 403.The first lip 408A can have an inner incline at 60 degrees toward theinside of the magazine 400. The first lip 408A preferably extends fromthe back of the first side 403 forward. The first lip 408A preferablydoes not extend the entire width of the first side 403. The second side404 can have a substantially identical second lip 408B that is a mirrorimage of the first lip 408A.

The first side 403 can comprise one or more first de-stacking ramps407A. The first de-stacking ramps 407A can be precision stamped into thefirst side 403 at an incline of 15 degrees. The first de-stacking ramps407 preferably extend into the interior of the cavity of the magazine400. At least a part of the ramps 407A is disposed on the first lip408A. The second side 404 can have one or more substantially identicalsecond de-stacking ramps 407B that are a minor image of the firstde-stacking ramps 407A. In a preferred embodiment, the first side 403and the second side 404 each can have two parallel de-stacking ramps407A and 407B.

The de-stacking ramps 407A and 407B preferably orient the cartridgesfrom a double stack position to a single stack as the cartridges arepushed by the follower 409 toward the 60 degree magazine feed lips 408Aand 408B. The magazine feed lips 408A and 408B can hold the topcartridge in place until the bolt from the barreled action pushes thetop cartridge into the chamber of the rifle. The magazine follower 409in conjunction with the de-stacking ramps 407A and 407B preferablyenables smooth, uninterrupted jam free feeding of cartridges into therifle chamber.

Modular, Adjustable Grip Handle

The pistol grip assembly 500 can encompass a number of featuresincluding, but not limited to, variable length of pull (i.e., thedistance from the back of the grip to the trigger), adjustable gripangle, and interchangeable grip handles. The pistol grip 500 can also beof a modular design. The pistol grip 500, therefore, can be coupleableto many different weapons. In one embodiment, the pistol grip assembly500 can be coupleable to the receiver of the tactical rifle 100, 200using a variable length of pull adapter 515 and a single grip fastener540. Additionally, the pistol grip assembly 500 can be locked at avariety of angles using a plurality of angular adapters 535.

In one embodiment, the pistol grip 500 can be coupleable to the receiver520 of the tactical rifle 100, 200 using a single grip fastener 540. Thegrip fastener 540 is preferably an Allen bolt or Torx bolt with standardmachine threads. In other contemplated embodiments, the fastener 540 caninclude a t-handle, knurled knob, or the like, which can allow fortoolless pistol grip 505 or grip angle adapter 535 changes. In yetanother embodiment, the grip fastener 540 can be retained in the pistolgrip 505 to prevent loss.

The pistol grip assembly 500 can comprise a commercial pistol grip 505.The pistol grip 505 can, for example, be similar to the pistol gripemployed on an AR-15 or M16 type rifle. In a preferred embodiment,commercial, off-the-shelf ergonomic rubberized, textured non-slip M16style grips, such as the MAGPOC® M1AD model, can be employed. In otherembodiments, other types of production and custom pistol grips arecontemplated. In other contemplated embodiments, the pistol grip caninclude additional rubber inserts to enable proper trigger engagement byshooters with varied hand sizes and to enable the use of gloves, such asflight gloves and cold weather gloves, while shooting.

The pistol grip 505 is preferably interchangeable in accordance witheither the tactical requirements or shooter preferences. The pistol grip505 can be attached to the lower receiver assembly 520 with a singlemachine screw 540 inserted through an opening 502 in the bottom of thepistol grip 505. In an exemplary embodiment, the shooter can change gripstyles using a standard Allen or Torx wrench to unscrew the pistol gripassembly 505 and replace it with a different grip. In other contemplatedembodiments, the grip fastener 540 can allow for toolless removal of thepistol grip assembly 500.

Referring to FIG. 5A, the pistol grip assembly 500 can comprise a pistolgrip 505, an angular adapter 535, a length of pull adapter 515, a gripfastener 540, and a grip retainer 525. The grip retainer 525 can passthrough the angular adapter 535 and can be threadably connectable to thepistol grip 505. The grip retainer 525 can aid in assembly by reducingthe number of loose elements that must be assembled on the tacticalrifle 100, 200 at a given time. The pistol grip assembly 500, however,can be assembled and is fully functional with or without the gripretainer 525. This can be advantageous, for example, to reducemanufacturing costs or when the grip retainer 525 is lost in the field.The grip fastener 540 preferably passes through the pistol grip 505, theangular adapter 535, and is threadably connected to the length of pulladapter 515.

The length of pull adapter 515 can comprise a first end 517 and a secondend 519. The first end 517 of the length of pull adapter 515 can bet-shaped and can be in communication with a t-shaped slot 522 in thebottom of the lower receiver 520. See FIG. 5B. In alternativeembodiments, other slot configurations are contemplated. The second end519 of the length of pull adapter 515 can preferably be coupleable withan angled slot 532 in the angular adapter 535. The pistol grip assembly500 can preferably be adjusted 0.6 inches fore and aft to facilitatecorrect grip and finger engagement of the trigger on the tactical rifle100, 200.

The angle of the pistol grip 505 can also be adjustable. The angularadapters 535A, 535B, and 535C can enable the pistol grip 505 to couplewith the lower receiver assembly 520 at a variety of included angles.These angles can be selected by the shooter depending on the shooter'sposition, standing, kneeling, sitting or prone, to maximize comfort,stability, and/or accuracy. The angular adapter 535 can be manufacturedto include many angles and other suitable angles have been contemplated.

The top portion of the angular adapter 535 preferably comprises aplurality of serrated surfaces 531. When the pistol grip assembly 500 isinstalled, these serrated surfaces 531 can be in communication withcomplementary serrated surfaces 524 on the lower receiver 520. Thebottom portion 534 of the angular adapter 535 is, in turn, coupleablewith a standard slot 504 in the pistol grip 505. The angular adapter 535and length of pull adapter 515 are manufactured to close tolerances.They can preferably be manufactured to a tolerance of approximately0.0005 inches. This enables the pistol grip assembly 500 to be rigidwhen assembled.

To change the pistol grip 505 or grip angle, the shooter can firstloosen the grip fastener 540 completely and remove the grip assembly 500from the lower receiver 520. The shooter can then choose the pistol grip505 suitable for his shooting style or mission. The shooter can nextchoose a suitable grip angle by choosing the corresponding angularadapter 535A, 535B, or 535C. The angular adapter 535 can be affixed tothe pistol grip 505 using the grip retainer 525 to simplify reassembly,if desired. The shooter can then insert the grip fastener 540 though thepistol grip 505 and the angular adapter 535. The shooter can then threadthe grip fastener 540 into the length of pull adapter 515 and tighten.

When tightened, the tension provided by the grip fastener 540 can securethe pistol grip assembly 500 as a rigid unit. Additionally, the tensionprovided by the grip fastener 540 can frictionally lock the length ofpull adapter 515 in the groove 522 in the lower receiver 520. Finally,the compression created by the grip fastener 540 between the serratedsurfaces located on the lower portion 524 of the lower receiver 520 andthe upper portion 531 of the angular adapter 535 can further act tofrictionally lock the pistol grip assembly 500 in place on the tacticalrifle 100, 200.

This can provide a pistol grip assembly 500 that has interchangeablepistol grips 505 and that can be adjusted quickly and easily for bothlength of pull and grip angle. The preset selectable angles for theangular adapters can be, for example and not a limitation, 11 degrees(515A), 17.5 degrees (515B), and 25 degrees (515C). It is contemplated,however, that the angular adapters can be manufactured to include manydifferent angles. The angular adapter 535 and the length of pull adapter515 can preferably be manufactured of 7075-T6 aluminum alloy. Inadditional contemplated embodiments, other lightweight, high-strengthalloys, composites, plastics, advanced polymers, and so on, may be used.

Versatile Buttstock Body & Length of Pull Feature

The buttstock assembly (“buttstock”) 630 can encompass a number offeatures including, but not limited to, adjustable length of pull, anadjustable recoil pad, an adjustable comb (i.e., cheek piece), andaccessory mounting points. The buttstock 630 is preferably designed tobe coupleable to the receiver 120, 220 of the tactical rifle 100, 200using a folding hinge mounting system (“mounting system”) 700, describedin detail below. The buttstock 630 also can be lockable in both anextended position and a folded position to provide additionalflexibility.

The buttstock 630 and mounting system 700 can be of a modular design.This can allow either component to be mounted on a variety of weaponsplatforms. In one embodiment, the buttstock 630 can be attached to thetactical rifle 100, 200 via a mounting system 700. Due to the use ofhighly accurate machining and/or casting processes, the buttstock 630can be attached to the mounting system 700 using a single fastener.Similarly, the mounting system 700 can be attached to the receiver ofthe tactical rifle 100, 200 using a single fastener. The machinedmounting surfaces are designed to provide a tactical rifle with rigidityand precision equal to or greater than that of non-modular weapons.

The buttstock 630 can provide a plurality of adjustments to allow userswith varying physical features to obtain a spot weld for precisionshooting. For example, the buttstock 630 can provide adjustable lengthof pull, i.e., the distance between the end of the buttstock and thetrigger. The length of pull can be adjustable using a cam adjuster thatcan be quickly adjusted regardless of whether the user is wearinggloves.

Referring to FIG. 6, the main structure of the buttstock 630 is providedby an outer girder 602 disposed about an inner girder 604. The outergirder 602 and inner girder 604 can be manufactured to provide a precisefit, preferably less than 0.010 inches. The inner girder 604 can bemovable within the outer girder 602 thus providing a length of pulladjustment. The inner girder 604 can comprise a slot 606 and a series ofrelief cuts 608 that provide incremental length of pull adjustments. Inan exemplary embodiment, the relief cuts can be at approximately 11mm/0.4 inch increments. The outer and inner girders 602,604 arepreferably constructed of 7075-T6 aluminum alloy. In other contemplatedembodiments, the outer and inner girders 602, 604 may be constructed ofother suitable metal alloys, composite materials, and the like.

The butt stock 630 can further comprise a locking lever 610. The lockinglever 610 preferably passes through a cross axle 612, a cross axlesaddle 614, the slot 606 in the inner girder 604, and an aperture 616 inthe outer girder 602. The locking lever 610 can be retained usingretainer 618 and a washer 620. In an exemplary embodiment, the retainer618 can be pinned to the locking lever 610 using a roll pin 622. It iscontemplated, however, that other methods for retaining the cam lockinglever 610 exist, such as a c-clip or a cotter pin, which may or may notuse the retainer 618.

The cross axle 612 is preferably sized and shaped to engage anddisengage both the relief cuts 608 in the inner girder 604 and the crossaxle saddle 614 mounted on the outer girder 602. In other contemplatedembodiments, the inner girder 604 and the cross axle 612 may havecomplimentary serrated surfaces. These surfaces can allow adjustment toany position within the length of pull range down to the resolution ofthe serrations.

Additionally, the locking lever 610 can pass through the slot 606 in theinner tube 604 and the orifice 616 in the outer tube 602. This canprovide length of pull adjustments while preventing rotation of theouter girder 602 with respect to the inner girder 604, thus maintainingthe proper axial relationship. In other words, when locked, the innergirder 604 and outer girder 602 are coupled such that the angle of theouter girder 602 to the tactical rifle 100, 200 remains constant. Thelocking lever 610 can enable the user to quickly and easily adjust thelength of pull of the butt stock 630 by retracting or extending theouter girder 602 where it slides forward and rearward on the inner buttstock girder 604.

Commonly, adjustable length of pull stocks use spring tension and aseries of preset detents to adjust stock length. The locking lever 610used herein provides many advantageous features. The locking lever 610relies on positive clamping action between the inner tube 604 and theouter tube 602 as opposed to spring tension and detents. The length ofpull adjustment, therefore, can be continuously adjusted. Adjustment canalso be along the entire adjustment range. This can also result in abuttstock that is lighter, simpler, and more rugged than typicalspring-loaded butt stocks.

In an exemplary embodiment, the outer girder 602 can include a raised,tapered, accessory mounting platform 624 on both sides of the outergirder 602. This platform 624 can be used to mount a variety ofaccessories and/or equipment. The platform 624 can preferably be a shortPicatinny rail 626 that enables the attachment of switches, remotes, orother accessories. These accessories can be, for example, communicationsdevices, lasers, lights, and other electronic and electro-opticalequipment. The raised tapered platform 624 and rail 626 can beergonomically positioned for left or right non-shooting hand operation.In an alternative embodiment, the butt stock girder 602 can employ adedicated electrical/electro-optic remote firing switch attachmentlocation utilizing a 1913 Spec Picatinny Rail on the left and right sideof the butt stock. In yet another embodiment, the butt stock girder 602can comprise a dedicated electrical/electro-optic remote firing switchlocation integral to the raised tapered platform 624 on the left andright side of the butt stock.

The buttstock assembly 630 can include an accessory mount in someembodiments. This accessory mount can be defined by an accessorymounting hole 627 in the outer girder 602 and an accessory mounting hole629 in the butt plate 631. This can provide a mounting location for aplurality of accessories and equipment including, but not limited to,butthooks, monopods, lasers, handgrips, radios, and flashlights.

A butt-hook 628 can be installed on the buttstock assembly 630 in someembodiments. The butt-hook 628 enables users to stabilize the tacticalrifle 100, 200 with a non-shooting hand. The butt-hook 628 can also bepositioned and sized such that it counter-balances the weight of therifle barrel. This can improve the accuracy of the tactical rifle 100,200 and reduce user fatigue. The butt-hook 628 is preferably installedon a lower portion of the butt-stock outer girder 602 using theaccessory mounting hole 627 and the butt plate 631 accessory mountinghole 629 using fasteners 632 and 634, respectively. The butt hook 628preferably possesses both left and right side flush cup sling swivelattachment points 636 to allow for the attachment of a carrying sling orother accessories. The butt-hook 628 is preferably 77.5 mm/3.05 inchesin length.

In yet another embodiment, FIG. 6 illustrates the butt stock assembly630 of the tactical rifle 100, 200 with a monopod 638 installed in placeof the butt-hook 628. The monopod 638 can preferably be heightadjustable. The monopod 638 can be used to support and stabilize a rearportion of the tactical rifle 100, 200 against the ground or other rest.Stabilizing the rear of the tactical rifle 100, 200 enables greateraccuracy. Additionally, the monopod can reduce user shooting fatigue,particularly during extended missions, by supporting the weight of thetactical rifle 100, 200.

The monopod 638 can comprise a mounting bracket 640, an outer housing642, an upper inner housing 644, a lower inner housing 646, and a base650 Like the butt-hook 628, the monopod 638 can be attachable, via themounting bracket 640, to the butt stock outer girder 602 and the buttplate 631 using fasteners 632 and 634, respectively. The upper innerhousing 644 is preferably coupleable to the mounting bracket 640 using afastener 652. The fastener 652 preferably allows the upper inner housing644 to pivot with respect to the mounting bracket 640.

In an exemplary embodiment, the upper inner housing 644 and the lowerinner housing 646 can be coupleable to the outer housing 642 using athreaded interface. The upper inner housing 644 and the lower innerhousing 646 can be threaded using male thread patterns and can bethreaded in opposite directions. The outer housing 642 can be threadedusing the complimentary female thread patterns at both ends. Therefore,turning the outer housing 642 in a first direction can cause both theupper inner housing 644 and lower inner housing 646 to extend. On theother hand, turning the outer housing 642 in a second direction cancause both the upper inner housing 644 and lower inner housing 646 toretract.

In an exemplary embodiment, the housings 642, 644, and 646, can bethreaded with a very fine thread pitch. The thread pitch can preferablybe between approximately 40-56 threads per inch. This enables preciseadjustment of the length of the monopod, and thus the elevation of thegun, by simply turning the outer housing 642. Turning the outer housing642, however, engages the threads of both the upper inner housing 644and lower inner housings 646, which can also allow for rapid heightadjustment.

In an exemplary embodiment, the housings 642, 644, and 646 can bethreaded using multi-start threads. The housings 642, 644, and 646 canpreferably be threaded using three starts. Multi-start thread reducesthe amount of rotation required on average to engage the thread whenstarting from a random orientation. In addition, because a multi-startthread is cut more deeply than a single start thread, the shear strengthof the threads can be greater. Multi-start threads also require fewerturns to traverse the same distance than single start threads. Thisratio is in proportion to the number of starts. For example, a preferred3-start thread requires one-third the number of turns to traverse agiven distance than comparable single-start threads require. Therefore,the combination of fine, multi-start threads can allow users to quickly,but precisely, adjust the elevation of the barrel of the weapon.

The lower inner housing 646 can be coupleable to the base 650 usingfasteners 654. The fasteners 654 preferably allow the base 650 to pivotwith respect to the lower inner housing 646. The user can simply placethe base 650 on the ground, or other suitable surface, and then turn theouter housing 642 to achieve the desired barrel elevation. The height ofthe monopod 638 can preferably be adjusted over a 73 mm or 2.9 inchrange.

In an exemplary embodiment, the rear of the buttstock assembly 630 caninclude an adjustable recoil pad 656. The recoil pad 656 can be designedto absorb at least part of the impact from the recoil of the tacticalrifle 100, 200. The recoil pad 656 is preferably a Pachmayr Decelerator™model D550 from Limb Saver. In other contemplated embodiments, differentrecoil pads can be employed such as pads constructed from rubber orother suitable advanced synthetic materials.

The recoil pad 656 can preferably be attached to an adjustable mountingrail 658 using fasteners 660. In an exemplary embodiment, the adjustablemounting rail 658 can be insertable into an adjustment channel 662machined or cast into the butt plate 631. The user can adjust the recoilpad 656 vertically to provide for a comfortable fit. When the recoil pad656 is in desired position, the user can tighten the fasteners 660frictionally locking the mounting rail 658 in the adjustment channel662. In an alternative embodiment, the recoil pad can be verticallyadjustable without tools using a push button or quarter-turn releasemechanism. The recoil pad 656 can preferably be adjusted over a range ofapproximately 5.5 inches. Additionally, contemplated embodiments of theinvention can include spacers that can provide additional adjustment tothe length of pull of the butt stock assembly 630.

The butt plate 631 can be attachable to the buttstock assembly 630 viathe outer girder 602 using fasteners 664. The butt plate 631 can providea plurality of mounting holes 668 to allow for additionally verticaladjustment. The butt plate 631 can be adjustable over the range ofapproximately 1 inch. In other contemplated embodiments, the butt plate631 can be manufactured with varied degrees of cast for left and righthanded users. In yet another embodiment, the butt plate 631 can bemanufactured with curved adjustment slots to allow for manual adjustmentof cast.

In yet another embodiment, the outer girder 602, butt plate 631 and/ormounting bracket 640 may be formed unitarily. This can reducemanufacturing costs by lowering the number of parts that must bemanufactured and assembled. This can also create a weapon that has amore solid feel by counteracting the stacking of manufacturingtolerances. In other words, an assembly made up of many pieces, eachwith their own manufacturing tolerances, will feel, and may actually be,less solid than one manufactured, cast, or molded from a single piece ofmaterial.

The butt stock assembly 630 can also include an adjustable cheek pieceor comb 670. The user can preferentially adjust the comb 670 to acomfortable height. The comb 670 can enable users to rest their cheekagainst the butt stock assembly to stabilize their head and the weaponto improve shooting accuracy. In a preferred embodiment, the comb 670 isalso ergonomically designed to further increase shooting comfort. Thecomb 670 is preferably vertically adjustable over approximately 1.5″ andin other contemplated embodiments can be laterally adjustable.

In an exemplary embodiment, the comb 670 can be attachable to the outergirder 602 via mounting bosses 672 and fasteners 674 and 676. Thefasteners 674 and 676 may preferably be bolts and nuts, respectively. Inother contemplated embodiments, the fasteners can be cam locks, levers,wing nuts, and the like, to allow for toolless adjustment of the comb670.

In an exemplary embodiment, the comb 670 can be adjusted for height byloosening the nuts 676, obtaining the desired height, and thenre-tightening the nuts 676 to frictionally retain the chosen setting.Slots in the adjustable comb 670 preferably provide adjustment to anyposition with the approximately 35 mm/1.4 inches of vertical heightadjustment. This can accommodate the deployment of a variety of scopering heights, optical scopes, and for combined application day andclip-on night, thermal sights and other devices. The comb is preferablyconstructed from carbon fiber reinforced plastic. In other contemplatedembodiments, the comb may be constructed from other plastics, metalalloys, or other suitable materials.

FIG. 7 illustrates an exemplary embodiment of the locking buttstockmounting system (“mounting system”) 700. The mounting system 700 ispreferably designed to withstand field service over the life of thetactical rifle 100, 200, including training, exercise, and combatservice. The mounting system 700 preferably is adapted to sustain recoiland operational use of all modern rifle cartridges. The mounting systemis preferable of a modular design. As a result, the mounting system canbe adapted for use with a variety of weapons platforms.

The mounting system 700 can be operated by the user pressing the lockbutton 740. The mounting system 700 preferably unlocks and allows thebutt stock assembly 630 to swing laterally to the left. Therefore, themounting system 700 can have a first detent position in which the buttstock assembly is full extended. The mounting system 700 can also have asecond detent position in which the butt stock assembly 630 is fullyfolded.

The mounting system 700 can comprise a male coupler 705 fitted into afemale coupler 715. A pivot 745 can pivotally couple the male coupler705 to the female coupler 715 through integral bores disposed coaxiallyin each of the couplers 705, 715. In an exemplary embodiment, the pivot745 can include a groove to receive a retaining clip 765. A pivot spring750 is disposed on the pivot 745 to exert a force thereon and tomaintain tension on the retaining clip 765. A hinge release button 740can be disposed in communication with the male coupler 705. The releasebutton 740 can be retained by a retaining pin 760 and spring loaded by arelease button spring 755.

The release button 740 can include a locking tang 770. When the mountingsystem 700 is in the first detent position, the locking tang 770 canengage a slot 775 in the female coupler 715. This can secure themounting system 700 in the closed position, i.e., with the buttstockassembly 630 in the extended position. The release button 740 thenenables the user to easily unlock and fold the butt stock assembly 630.Upon traversing to the left towards the lower receiver 620, the buttstock assembly 630 preferably is spring driven and traverses rampedportions on the male coupler 705 and the female coupler 715. When themounting system 700 is in the second detent position, a self-tensioningdesign technology holds the mounting system 700 in the open position andthus the buttstock assembly 630 in the folded position.

An exemplary embodiment of the mounting system 700 is shown assembled inFIG. 7B. The male coupler 705 and the female coupler 715 can be machinedto include a male mounting boss 780. The mounting bosses 780 arepreferably machined to a substantial depth/height to provide a precisefit with corresponding female mounting bosses located on the receiver620 and buttstock assembly 630. In an exemplary embodiment, the mountingbosses 780 can be approximately 0.075 inches tall Δh. The mountingbosses can be machined to a tolerance of approximately 0.0005 inches.This provides a mounting system 700 that can be mounted with highprecision and rigidity while utilizing a minimum of fasteners. In oneembodiment, the mounting system 700 can be mounted to the buttstock 630using a single fastener. Similarly, the mounting system 700 can bemounted to the lower receiver 620 using a single fastener.

In yet another embodiment, the buttstock assembly 630 may include a dropdown 204. See FIG. 2A. In other words, the buttstock assembly 630 cancomprise a mounting portion that is attachable to the mounting system700, and may include a portion to lower the inner girder 604. This dropdown 204 can be approximately 1 inch and range from approximately 0.3inches to approximately 1.5 inches. This may be necessary, for example,to accommodate low profile scopes, scope rings, or sights and yet stillallow full range of adjustability of the adjustable comb 670. Inaddition, it is believed that the drop down 204 creates a less directpath for recoil energy. Therefore, recoil felt by the shooter may beadvantageously reduced.

Lower recoil is advantageous in several ways. For instance, lower recoilcan prevent both acute and chronic injuries. Lower recoil can alsoincrease shooter comfort. This can permit shooters to remain on stationand firing for longer periods. Lower recoil can also enable the shooterto return to target more quickly after firing a shot. This is possiblebecause the position of both the shooter and the gun are displaced lessby recoil energy.

The modularity features discussed hereing enable a great deal offlexibility in the tactical rifle 100, 200 and the components thereof.Users can change components to suit their particular shooting style, andthey can replace pieces that become worn or damaged on the battlefield.This is advantageous as it allows the user to replace only thosecomponents that need to be replaced. With conventional weapon systems,while some parts have separately replaceable, others required replacingthe entire weapon system. This also allows for rapid upgrading in thefield as improvements are made or technology advances. In addition, manyof the components of the tactical rifle 100, 200 can be adapted for useon a variety of weapons systems.

FIG. 8 illustrates a method 800 to fabricate a tactical weapons platformin accordance with some embodiments of the present invention. Thoseskilled in the art will understand that method 800 can be performed invarious orders (including differently than illustrated in FIG. 8),additional actions can be implemented as part of a method embodiment,and that some actions pictured in FIG. 8 are not necessary. In addition,it should be understood that while certain actions illustrated in FIG. 8may be discussed herein as including certain other actions, thesecertain other actions may be carried out in various orders and/or asparts of the other actions depicted in FIG. 8. Method embodiments of thepresent invention, such as the one depicted in FIG. 8, may beimplemented to provide the various tactical weapons systems and tacticalweapons platform features discussed herein.

The method 800 generally initiates at 805 by providing one or moremodular components for use in assembling a weapons platform. Incurrently preferred embodiments, one or more of such modular componentscan be precision machined. By utilizing precision machined, modularcomponents can be securedly affixed together to form a durable weaponsplatform. Through the use of modular components, the various modules canbe adjusted by users as desired. In addition, one or more of the modularcomponents can be manufactured with materials that are light weight,durable, and capable of managing heat produced during operation. In someembodiments, such materials can include various Aluminum Alloys andcarbon composite materials.

The method 800 can also include provision of a modular forend 810, areceiver 815, and a butt stock 820. These components can be similar tothe forend, receiver, and butt stock components described above.Advantageously, provision of modular components enables users andmanufacturers alike the ability to interchange modular components asdesired. For example, a forend can be interchanged for use to housevarious different barrels for use with different caliber actions. Inaddition, receiver assemblies can interchanged in modular fashion sothat different caliber ordinance may be used. In some methodembodiments, modular-adjustable grips can also be provided. Such gripscan enable users to modify grip handles for varying hand, finger, andtrigger movement aspects.

The method 800 can also include assembling a rifle stock chassis systemby coupling and joining together a modular forend, a modular receiver,and a modular butt stock at 825. In accordance with some embodiments,the modular forend and the modular receiver can be attached together viamechanical fasteners (e.g., screws). In other embodiments, the receivermay be configured to receive a forend coupling mechanism (e.g., areceiver interface) used for coupling the modular forend to the modularreceiver. The forend coupling mechanism can may be carbon-fiber bondedto a tubular-shaped forend in accordance with some embodiments.

Also, in accordance with some embodiments, the modular receiver and themodular butt stock can be hingedly coupled to each other. Use of ahinged couple enables the modular receiver and the modular butt stock torotate relative to each other. The hinge can have a locked position sothat butt stock can be locked in an extended position. In addition, thehinge can have a semi-locked position so that when folded toward thereceiver, the butt stock can only be closed with adequate force. Forexample, in some embodiments, the hinge can be biased with a spring orcam configuration so that a folded butt stock tends to remain in afolded configuration.

The method 800 can also include providing one or more rail attachmentsurfaces (or rails) for use with a weapons platform at 830. In someembodiments of the present invention, the rail attachment surfaces maybe 1913 spec Picatinny rails, while in other embodiments, other types ofrail attachment surfaces may be utilized. The various rail attachmentsurfaces may have various lengths for attachment to various places. Thevarious rail attachment surfaces may also have various pitches or railheights so that many various devices can be attached to the railattachment surfaces. Rail attachment surfaces can be attached to aforend of a weapons platform at varying angles (e.g., 0 degrees, 45degrees, 90 degrees, and 180 degrees). Rails can be attached viamechanical fasteners in some embodiments and in other embodimentsprovided as integral attachment surfaces. Also, in some embodiments, amonolithic rail can be used along a top portion of weapons platform tomechanically link a forend portion to a receiver portion.

The method 800 may also include also providing various heat managementfeatures at 835. By providing one or more heat management features to aweapons platform, users can control how heat dissipating during use mayaffect use of accessories (e.g., electro-optic devices). One heatmanagement feature can include providing heat management shields,running the length of a forend, for attachment to the forend. The heatmanagement shields can be attached to the forend to provide a thermalshield barrier between a gun barrel and above-situated accessorydevices. The heat shields can be made from carbon-based materials inaccordance with some embodiments.

Another heat management feature can include provision of a free-floatingbarrel housed within a forend tube. Some forend configurations of thepresent invention can be sized and shaped to envelop and house at leasta portion of a barrel extending from an action of a weapons platform.Forend tubes can be fabricated with carbon-fiber bonding techniques.Forend tubes can insulate mounted accessory devices from barrel heat andin some embodiments can assist in providing a path for heat to be wickedaway via one or more heat sinks. For example, forend tubes can have oneend situated proximate a receiver, and the receiver can be configured toabsorb heat for passing to the ambient environment.

The method 800 may also include also providing various modular forend orbutt stock features at 840. Such features may include providing swivelforend/butt-stock features, butt stock length of pull features, buttstock configuration features, and also butt-stock/monopod features.Still yet, such features may include providing a forend cap to cap aforend tube. The forend cap can have an aperture through which a barrelcan pass and also enclose the forend tube. An enclosed forend tube can,in some embodiments, be used as a storage compartment for holdingvarious accessories. In addition, a forend cap can be used to provideattachment to any number of monopods, bipods, or tripods as desired byusers.

Another forend feature that can be provided is a forend end connectionpiece (or forend mounting mechanism). The forend mounting mechanism maybe used to assist in modular interchangeability with forendconfigurations discussed herein. For example, a forend mountingmechanism can be carbon fiber bonded with a forend tube to providereturn to zero mating to a receiver. In some embodiments, a forendconnection piece may be separable from a forend and utilized forattachment to forends of many shapes and sizes.

As discussed herein, operational demands placed on a tactical riflesystem require it to be adaptable to its applications, environment andconfigurable to shooters. One element of a tactical rifle system is astock. Functional stock components enable stocks to perform as aninterface between the shooter and working parts of a weapons platform(e.g., a rifle). Various embodiments of the present invention aredirected to a modular tactical rifle stock chassis system with anadjustable folding, retractable butt stock, and various otherconfigurable features.

The embodiments of the present invention are not limited to theparticular formulations, process steps, dimensions and materialsdisclosed herein as such formulations, process steps, and materials mayvary somewhat. Moreover, the terminology employed herein is used for thepurpose of describing exemplary embodiments only and the terminology isnot intended to be limiting since the scope of the various embodimentsof the present invention will be limited only by the appended claims andequivalents thereof.

Therefore, while embodiments of this invention have been described indetail with particular reference to exemplary embodiments, those skilledin the art will understand that variations and modifications can beeffected within the scope of the invention as defined in the appendedclaims. Accordingly, the scope of the various embodiments of the presentinvention should not be limited to the above discussed embodiments, andshould only be defined by the following claims and all equivalents.

1. A rifle stock assembly comprising: a first forend assembly adapted tosurround a portion of a barrel; a lower receiver assembly detachablycoupled to the forend assembly, the lower receiver assembly adapted tointerface with a first bolt action upper receiver comprising a firstcaliber and a second bolt action upper receiver comprising a secondcaliber; and a butt stock assembly detachably coupled to the lowerreceiver assembly.
 2. The rifle stock assembly of claim 1, the forendassembly and the lower receiver assembly detachably coupled by a firstfastener.
 3. The rifle stock assembly of claim 1, the forend assemblyforming a sleeve surrounding at least a portion of the barrel, whereinthe forend assembly is not in physical contact with the barrel.
 4. Therifle stock assembly of claim 1 further comprising, a connecting elementcoupling the forend assembly to the lower receiver assembly.
 5. Therifle stock assembly of claim 4, wherein the forend assembly is not inphysical contact with the lower receiver assembly. 6-8. (canceled) 9.The rifle stock assembly of claim 1, the receiver assembly and the buttstock assembly detachably coupled by a hinge.
 10. The rifle stockassembly of claim 9, the butt stock assembly having a longitudinal axis,the longitudinal axis aligned below the hinge.
 11. The rifle stockassembly of claim 1 further comprising, a first rail assembly adapted tocouple to a top portion of the forend assembly and a top portion of thefirst or second bolt action upper receiver, the first or second boltaction upper receiver coupled to the lower receiver assembly, the railextending substantially the length of the forend assembly and the firstor second bolt action upper receiver for mechanically coupling theforend assembly and the first or second bolt action upper receiver toreduce vibration and increase dampening.
 12. The rifle stock assembly ofclaim 11 comprising, a second rail coupled to a side portion of theforend assembly.
 13. The rifle stock assembly of claim 12 comprising, athird rail coupled to a bottom portion of the forend assembly.
 14. Therifle stock assembly of claim 12, the forend assembly comprising a firstmounting area for coupling the second rail to the forend assembly suchthat a first component can be mounted parallel to the bore of the barreland a second mounting area for coupling the second rail to the forendassembly such that a second component can be mounted parallel to thebore of the barrel.
 15. The rifle stock assembly of claim 1, the lowerreceiver assembly adapted to interface with a bolt action upper receiverwithout a bedding compound.
 16. The rifle stock assembly of claim 1, thelower receiver assembly comprising a bay contoured to directly interfacewith a bolt action upper receiver.
 17. A modular stock assembly for abolt action rifle comprising: a first forend assembly having a bodyadapted to house a barrel in a free floating configuration, wherein thebody surrounds at least a portion of the length of the barrel; a secondforend assembly having a body adapted to house a barrel in a freefloating configuration, wherein the body surrounds at least a portion ofthe length of the barrel; a lower receiver assembly detachablycoupleable to the first and second forend assemblies and adapted todirectly interface with a bolt action upper receiver without a beddingcompound; a butt stock assembly detachably coupled to the lower receiverassembly by a hinge; wherein the first forend assembly comprises a firstdesign and the second forend assembly comprises a second design.
 18. Therifle stock assembly of claim 17 comprising, a first rail coupled to atop portion of the forend assembly and to a top portion of a bolt actionupper receiver, the bolt action upper receiver coupled to the lowerreceiver assembly, the rail extending substantially the length of theforend assembly and action.
 19. A modular rifle stock assembly systemcomprising: a forend assembly adapted to surround a portion of a barrel;a lower receiver assembly adapted to detachably couple to the forendassembly, the lower receiver assembly adapted to interface with a boltaction upper receiver; a first butt stock assembly comprising a firstdesign and detachably coupleable to the lower receiver assembly; and asecond butt stock assembly comprising a second design and detachablycoupleable to the lower receiver assembly.
 20. (canceled)
 21. A modularbolt action rifle chassis assembly for use with a bolt action receiver,the chassis assembly comprising: a center chassis section, with a firstend and a second end, configured to couple to a bolt action receiver; aforend assembly adapted to house a portion of a barrel associated withthe bolt action receiver in a free-float arrangement, the forendassembly detachably coupleable to the first end of the center chassissection; a monolithic rail coupled to at least a portion of a topsurface of the forend assembly, the monolithic rail being sized andshaped to extend along at least half the length of the forend assembly,and being disposed above the center chassis section and sized and shapeto extend at least half the length of the center chassis section; and abutt stock assembly hingedly coupled to the second end of the centerchassis section.
 22. The modular bolt action rifle chassis assembly ofclaim 21, the monolithic rail extending substantially the entire lengthof the forend assembly and the center chassis section.
 23. The modularbolt action rifle chassis assembly of claim 21, wherein the interfacesbetween the center chassis section, the bolt action receiver, and thebuttstock assembly are free of a bedding compound.
 24. The modular boltaction rifle chassis assembly of claim 21, the butt stock assemblyfurther comprising a vertically adjustable recoil pad.
 25. The modularbolt action rifle chassis assembly of claim 21, further comprising agrip configured to detachably couple to the center chassis section at aplurality of different points so that the grip position relative to thecenter chassis section is variable, such that the angle of the grip, thedistance from the grip to a trigger, or both is adjustable.
 26. Themodular bolt action rifle chassis assembly of claim 21, the forendassembly further comprising at least two mounting interfaces forcoupling additional rails at different orientations and heights alongthe forend assembly, the mounting interfaces spaced apart atpredetermined intervals such that at least one of the mountinginterfaces is configured to enable coupling of an electro-optical deviceto the forend assembly at an orientation wherein a beam generated by theelectro-optical device is parallel to and in the same vertical plane asthe bore line of the barrel.
 27. The modular bolt action rifle chassisassembly of claim 21, wherein the monolithic rail comprises a cant ofbetween 0 and 60 MOA.
 28. The rifle stock assembly of claim 17, whereinthe first design comprises one or more forend designs selected from thegroup consisting of a squared target, tapered, power cell, and poweredelectro-optic forend; and the second design comprises one or more otherforend designs selected from the group consisting of a squared target,tapered, power cell, and powered electro-optic forend.
 29. The riflestock assembly of claim 17, wherein a hinge pin is removed from thehinge to form a detachable joint.
 30. The rifle stock assembly of claim19, wherein the first design provides tooled adjustment; and the seconddesign provides tool less adjustment.